Stop mechanism for phonographs.



F. J. HORNBERGER. STOP MECHANISM FOR PHONOGRAPHS. APPLICATION FILED NOV. 26 1911.

Patented Dec. 17, 1918.

inediziize i ling iehl ano State of (onneetieiih have invented eerl'ain new ZllHl iiseinl lmproi'enients iii Slop iileehanisin for l il()IlO{2'2i})li:-;1 an rlare the following to he a 'lnh. elear. ani'l exaet description of the inveniion. such as will enable others skilled in the. :irl" lo whieh it appertains to make and use the a.

My. invention reia'l'es to an ainoniatie aitaelnnent for phonographs or iailiing nniehines of like character having a inrn table and a recording arin, anil it eonsists in l'he arrangement and eonihination of meehanisin for aulomalieali; shopping the nmehine. iii the end of the reeorll withoui regard to the size of the (lisk or reeorii, thus ohviaiing; the neeessity of setting the mechanism for records of varying sizes. it also enables the operator 15o interrnpi ie reeoril at an a e and engage flieneeiile at any desired point in the record withoui stopping the niaehine, or interfering wiih the. operation of the slop mechanism.

Referring; to the (Mailings:

Figure l represeni's a. plan view oi the stop Hl('(ll2U1iSlll in idle position, broken View of ihe motor board and sectional View oi The arm stud on line a a of T Fig. a similar view of the slop 1neeha-- nism showing said slop ineehai'iisni in operanon;

Fig. 3 is an eniargerl ilezaii view of the pinion {throw-out lever: i Fig. iii; an enlarged hrohei'i View of the locking: lever. and elevation of the segment lever. ele aiion of lhe trip iever and in}; roii showing the, positions they occupy when the stop nioi'ion mechanism is in (!}')l'il.i',i()i1i 5 is an enhirg eii \iQW of the irip lever anil irip roi showing: their positions when. the stop motion mechanism is at res Fig. 6 is an enlarged broken view of segment lever and front end elevaiion trip lever;

F 7 is qflm-ged broken View of Iiho motor board, star Wheel and its supporting frame;

Fig. 8 an enlarged broken View of she motor board, and size elevation of the iniergear;

Fig. 9 is a detail broken view of ihe carried by the recording or tone arm;

'enel of {ill is 1 and f2is a pin ai'iehored one end (he i ig i is a 'L'QillHQii broken view of the lone arm of a phonograph; and.

Fig. I 1 is-an enlarged detail view of )art 01 the stop meeiianisin.

The sto) meehanisin is located on (he motor hoard I, which iii'aierlies lhe lam tablenot hown. ihe motor boa (fl has the usual recess :2 and he hisl: shaft 3 projecting therefrom. Projecting iaterall w from this sha'il' 'r-s the usual torn iaoie driving pin 4-. whieh pin is exiendecl beyond the recess to actuate #110 stop mechanism arrl is provided with the head adapted to engage. the teeth of the star wheel and effect a step by siep rotation oi said wheel. This wheel is soenreil io the shai l 7, Fig. 7, journaiecl in the frame 8. which friiiie is jonrnalei on The serew 9 secnreii ii!) the mot-or board.

10 is a pinion on shaft 7' adapted to l. thrown in anil ont of mesh wiih he intermediate. gear 11. This gear is iournaleel on the Silili 12, Fig. 11, project n.5,: from the hlale l3 sernred to the motor hoarii. The plafe h overlies plate 13 to form a seat for 'ear l1 and is secured to said gear by the so i. i. '16 is a serew-see a 11 :h'ljnstahly mounted in the stud and the. pinion 17 is journaleil on said screw and is frictionaliy held againstthe, face of the gear hub 18 by the spring- 19.

The pinion 17 meshes with the ieeih of i-iegnient iei'er eoniprisingg' ifhe head '20 ion.- naleil on the pin 21, and eoiineel'ecl lo bh arm by serews These members '20 an: 22 eouhl he niaoe in one ce, as She er neei .saril opera e. ogeiher. F iii iLhG outer ted the (rip is loc .glnein. level lever i igs. 4, 5i and 6. is a set serew arm 26 arm 27' securing this lever to the horizontai of a right angle lever whose vertical passes freely through the lover horizontai arm is journaleil in 28 secured to the lever 29seeaiso Figs.

trip lever and on which inoiin 'zeii the roller 30. The opposite. end this trip lever carries the rljusting screw 33., Fig. 6, whose in her end is adapted in Contact with the ho:- lom 01"? the bracket to adjust the position oi? said roiler. I

32 is a 'ffil'lfili. loloek swireleci on the end of the lever .22. and 323 is a trip rod freely inonnieil in the fork of said lilo-ck and pivotaiiy supported on the pi; 3% of the forked swivel block mounted on he end of eh locking lever 36. This locking lever is pivotally supported on screw 37, and its forward end 38 is normally held against the starting lever 39 by the spring l0.

l1, Fig. 10, is a stud projecting from the underside of the tone arm 42, and to this stud is secured the driver 43 adapted to actuate the lever 22 in the manner presently to be tom 51 of the forked opening of lever 46,

Fig. 3, and when the lever is moved forward by the tone arm it will cause the frame 8 to turn on itspivoted support and carry the pinion 10 out of contact with the large gear 11. r

Actuating the starting lever 39 to operate the machine will also cause its notch 52 tp engage the locking lever 36 and thus temporarilv connect the machine ope 'ating mechanism with the stop mechanism to start the machine. The needle is brought in contact with the record as usual and the star wheel will continue running idle until released by the inward travel of the tone arm whose underlying lever 43 will engage'the trip lever arm 27. through the medium of the flexible spring 4-3", and turn the segment lever on its p iiiot-al support in the direction of arrow 7). Fig. 1, until the contact between the screw 30 and the bottom of the forked opening of the lever 46 is suliiciently broken to permit the spring 52 to actuate the frame 8. and bring the pinion 10 into mesh with the large gear 11.

The contact of the spring 4:3 with the arm :27 will also tilt the trip lever 2i and cause its roller. ,30. Fig. l, to elevate the trip rod 33 whose underlying teeth 53 is adapted at the proper time. to engage the blade 54: located at the bottom of the narrow slot of the swivel block 32.

When the end of the disk record has been reached. the inward movement of the needle arm will cease. but the geared mechanism will continue in operation long enough to release the trip lever 2% from its contact with the spring 43 on the driver 43 and permit. the trip lever to drop. This will also allow the trip rod 33 to drop with the underlying teeth .33 in contact with the blade 54. and thus effect a direct pull on the locking lever 36 and release the same from the notch 52 of the starting lever 39, so that the spring 56 can rotate said lever and bring the entire mechanism of the machine into a state of rest. When thetone arm is being manually returned, the driver 43 will engage the roller 57, underlying the extension 58 of the lever 22, and cause a reverse movement of the segment lever until the driver 43 can clear itself from the roller 57. This will leave the segment lever in the proper position to be picked up again by the spring of driver 43. The tone arm is now free and at liberty to engage a record of any dimension.

The sole purpose of the actuating mechanism, located between .the segment lever and the driver 5. is to continue the t 'avel of the segment lever and carry the arm 27 away from the haltedtone arm far enough for the trip lever and its roller 30 to drop. and

permit the teeth of the trip rod to engage the blade 54 and release the locking lever 36. The object of the frictional pinion 17 is to compensate for any difference between the travel of the needle or tone arm and the large gear 11. In other words, it is not. necessary that the inward movement of the tone, arm

be accurately timed with the rotation of the gear 11. as the pinion will readily slip to compensate for any difference that may occur.

As the track of records are more or less wavy, the tone arm must necessarily follow any irregularity of this kind. To enable the tone arm to move in accordance with the wavy track of the record. I employ the light sensitive spring 43', which contacts with the arm 27 of the trip lever mechanism. This spring will enable the tone arm to have whatever vibration is necessary to conform to the irregular track of the record and also exert sutlicient pressure'to actuate the segment lever.

As before mentioned, the mechanism above described is adapted to automatically stop the machine at the end of a record regardless of its size. The point of stoppage for the tone arm is always at the end of a record, whether the record be short or-long. and the tripping of the locking lever cannot take place until after the tone arm has halted; therefore. the size of the record has no effect or bearing on the action of the tripping mechanism, which only operates at the end of the record. I

Having thus described my invention. what I claim is l. A stop' attachment for disk phonographs having a rotatable disk shaft, starting lever and pivoted tone arm. of a segment lever, means carried by the tone arm for actuating said lever, an intermediate gear, a

frictionally supported pinion carried by the gear and meshing with the segmentlever, means for imparting an intermittent move. ment to the gear from the disk shaft, means carried by the segment lever for i iterruptmg such movement, a locking lever, a trip rod connected therewith, a trip lever for the rod, and means carriedby the segmentlever for actuating the trip 'rod and releasing the locking lever from its engagement with the starting lever.

tone arm and starting lever of a ph0n0- graph, of stop mecl'ianism comprising a'star wheel actuated from the disk shaft, a pivoted" support for the starjwheel, an inter-' mediate gear, a pinion carried by thesup-. port for actuating the gear, a segment lever associated with the. gear by a frictionally supported pinion,fiex-ible-means on the tone arm for actuating the segment'lever, and

means on the/segment lever for-releasing segment" lever for imparting an intermittent n'iovement to'the segment .levera'fter the tone arm is halted, a trip lever on the segment lever, means onthe tone. arm to engagethe trip lever and actuate the segment'-lever-'t0-1 ward the disk shaft, .means carried by the.

trip lever to render'the trip rod inactive while a record-1s bein played, and means on the segment lever adaptedto be engaged after thetone a-r'm halted.-

byjthe trip rod to'releastl'ielocking lever 4. In combination, a segment lever,:a star wheel, a-pivoted .support therefor, an intermediate gear, ,a pinion carried bythestar 2. In combination witlr the disk shaft,-

' of areco rd. I In te'stnnon-y whereof I aflix my signature;

wheel meshing with the gear, a toothed seg- .m'ent lever, a fi'ictionally supported pinion carrled'bythe gearandin mesh withsald" lever, and means carried by-thelever to di sengage the-starwheel pinion from the gear.

In combination with the disk shaft,

strating :lever-and tone arm of a phono-' graph, of stopvmcchamsm col'nprismg a piv-" ot'ed lever, a locking lever-engaging the' vstarting lever, means umncctiug, the locking lever with saidpivoted level, a. lever carried by the tone arm. a spring carried by said lever for actuating said pivoted lever, said pivoted lever normally idle until actuating by the tone-arm, means intern'iediate of the pivoted lever and disk shaft and actuated by the disk shaft to move in unison with'the pivoted leverwhen saidlever is under the control of the toneaim and move said pivoted lever out of contact with the tone arm 7 at the completion-of a record, means for re'-- leasing the locking'lever from-the starting lever, the tone arm lever adapted toengage v the pivoted lever' and return said -pivoted lever to its normal idle position;

[6Q In combination with the tone arm-Jand stop mechanism of a phonograph, of la;

pivoted lever ope'ratzlvely connected with said mec'hanisn-i and actuated by the tone arm and remain u-nder'the control of said arm dur ng its. inward travel, flexiblezmeans carried "by thetone arm to'serve bot-has a driver for the leverar'id means to permit afslight ibration'iof said-arm and thus en -j able it to follovvany irregularity in the. track FREDnmCK JvHOR-NBERGER." 

